Flue-expander.



J. B. & A. LILLIBRIDGE. FLUE EXPANDER. APPLICATION FILED MAY 25, 1909.

\ 17 14 1 13 n im l Patented Jan. 23, 1912.

2 SHEETSSHBET 1.

. I, J 7 I L J. B; & A. LI'LLIBRIDGE.

x-TLUE EXPANDER. APPLICATION FILED MAY 25, mos.

Patented. Jan. 28, 1912.

2 SHBETSSHEET 2.

5% 1 i as? 51mm JZ-LLZZLZKI Andrew L illpbrge /uuw ablousu ami/bwmwTubes, and give herewith n stares PATENT o F cE.

renown B. LILLIBaInoE AND ANDREW LILLIZBRITJGVE, or ELK CITY, KANSAS,ASSIGN- oias creme-THIRD TO A. n. omeo, or ELK CITY, KANSAS.

rLUn-nXeAnDnn rciaarr.

Specification of Letters Patent.

Patented Jan. 23,1912.

Application filed May zsll ieoe. "Serial No. 492,3se

To all whom it may concern:

of Kansas, have invented a new and useful Tool for Use in ExpandingBoiler Flues and the following specification of same.

This invention relates to flue expander-s, and carries as its principalobject a novel form of movable expandingmember and a mandrel-supportingand expanding member, the said expanding member being provided with aplurality of revolving bodies which are arranged at an acute angle tothe axis of the mandrel so that in revolving the mandrel the expandingmember can be ac curately fed into the flue.

A. further object of the invention is to provide an expanding memberwith a plurality of revolving bodies which are mounted for movementradially of the axis of the expanding member.

A still further object of the invention resides in the provision ofatchet mechanism on the mandrel. which will enable the operator torevolve it in one direction during the feeding operation of theexpanding member.

in the drawings. forming a portion of th s specification and in whichlike numerals of reference indicate similar parts in he several views:-Figure 1 is a side elevation of our improved flue expander. Fig. 53 isa longitudinal section thercthrough. Fig. 3 is a transverse sectiontaken on the line 3-3 of Fig. 1. .l ig. t is a detail side elevation ofa portion of the mandrel showing the ratchet face thereon. Fig. 5 is adetail side elevation of the actuating sleeve showing the ratchet facethereon. Fig. 6 is a transverse section taken on the line 7 -7 of F 1.

Our improved flue expander consists of a mandrel l which is taperedapproximately throughout its length, its reduced end being disposedoutermost as is obvious. The said reduced end of the mandrel is formedwith a threaded passage for the reception of a screw or its equivalent 2upon which is mounted astop 3, the same being'of a constructionwherebyits marginal edge portion extends radially beyond the reduced endportion of the mandrel for a purpose to be hereinafter described. -Theenlarged end portion of the mandrel is provided with Be it known thatwe, JEROME B. LIDLI- BRIDGE and iiivonnw Llnmmunon, residing at v ElkCity, county of Montgomery, and State;

angularly disposed wrench-engaging surfaces 4 from which extends aratchet mem her 5 provided with an annular toothed surface 6. From thecentral portion of the member 5extends a stem 6 upon which is mountedasleeve or ratchet member 7 whose inner end formed with an annulartoothed ratchet surface 8 whose teeth cooperate with those upon themember 5. The opposite. end of the member 7 is formed to provide asquare member 9 with which is adapted to be engaged a wrench so that thedesired rotary movement may be imparted to the mandrel. clamping nuts10. The sleeve 7 is formed to provide a socket 11 in which is disposedone end of an extensile spring 12, the spring bearing at one of itsextremities against the shoulder 12 of the socket 11, and atits otherend against the innermost nut 10.

An expanding member 13 is mounted on the mandrel and it consistspreferably of circular disks 14. and 15, the latter being considerablylarger than the former for av purpose to be hereinafter described. Thedisks are spaced from each other by spacing bolts 14 whose ends aresuitably seated in the disks. The disks are provided with elongatedslots 16 which radiate from the mandrel as shown in Fig. 6 of thedrawings. These slots receive the trunnions at the ends of revolvingbodies or rollers 17. The rollers extend at an acute .angle to the axisof the mandrel. V

The construction of the flue expander herein described and shown is suchthat the member 7 is mounted on the mandrel for longitudinalIlIOVQIDGIIlDSO that its ratchet surface can be moved out of engagementwith the ratchet surface upon the member 5. Under spring tension themember 7 has its ratchet surface normally engaged with the ratchetsurface upon the member 5 and by means of a wrench or other suitabletool which may be applied to the head portion 9 the mandrel may berotated toward the right. member is such that its rollers frictionallyengage the surface of the mandrel, and in cident to the fact that therollers are each arranged at an acute angle to the axis of the mandrelupon rotation of the latter toward the right, the rollers will berevolved toward the left and the expanding The stem is threaded'toreceive,

The construction of the expanding panded in a uniform manner.

member fed longitudinally on the mandrel. As the rollers or revolvinbodies 17 are fed on the enlarged portion or the mandrel theirengagement therewith Will cause them to move radially to expand the fluein a very effective manner. The expanding member will be revolved andthe flue may be ex- The stop at the reduced end of the mandrel serves tohold the expanding member against displacement.

In a fine expander, a pair of disks formed with radial disposed slotsand centrally disposed openings, rods connecting said disks and locatedbetween the slots thereof, a series of rollers having trnnnions movablein the slots of the disks, a conical expanding member movable throughthe central openings of the disks and adapted to contact with therollers, a stop on one end of said expanding member, the other end ofthe expanding member being reduced to form a threaded extension andbeing formed with ratchet teeth, a sleeve disposed on said extension andprovided with ratchet teeth to engage the first ratchet teeth, saidsleeve having an enlarged bore forming a shoulder, lock nuts threaded onthe extension, 9, spring disposed in" the enlarged bore and bearing itsinner end against the shoulder of the sleeve and at its outer endagainst the lock nuts whereby the ratchet teeth of the. sleeve are heldin normal engagement with the ratchet teeth of the expanding member, anda collar mounted on the sleeve and strad dling the ratchet teeth of saidsleeve and expanding member.

JEROME B. LILLIBRIDGE. 'ANDRE W LILLIBRI-DGE.

Vitnesses RICHARD L. MUssoN, CLARK T. CIIEXOWETII.

